Samsung Exynos 7570 Advantages
More modern manufacturing process (14nm vs 28nm)
Lower TDP (4W vs 5W)
Released 6 months late
Qualcomm Snapdragon 425 Advantages
Better graphics card performance FLOPS (0.024 TFLOPS vs 0.0208 TFLOPS )
Larger memory bandwidth (5.34GB/s vs 4.2GB/s)